* {
    margin: 0;
    padding: 0;
}
ul,
li {
    list-style: none;
}

.box {
    height: 500px;
    width: 1200px;
}
.glass{
    height: 400px;
    width: 700px;
}
.smallBox {
    display: block;
    position: relative;
    cursor: auto;
}

.smallBox img {
    height: 100%;
    width: 100%;
}

.tool {
    position: absolute;
    top: 0;
    left: 0;
    border: 1px solid #fff;
    background-color: #fff;
    opacity: 0.4;
    cursor: move;
    display: none;
}

.bigBox {
    position: absolute;
    overflow: hidden;
    display: none;
}

.bigBox img {
    position: absolute;
    left: 0;
    top: 0;
}

.chosePic {
    width: 450px;
    height: 80px;
    padding-left:70px;
}

.chosePic li {
    float: left;
    width: 70px;
    margin-right: 10px;
}
.chosePic li img {
    width: 100%;
}

.chosePic li.active {
    border: 1px solid black;
}